Nowadays there's also PunyInform, an Inform 6 library that replaces the standard library. Programming for it is very similar, but the resulting games are much smaller and faster, to work well on 8-bit computers. https://github.com/johanberntsson/PunyInform

There's currently a jam going on. Three PunyInform games have been released, and anyone can play and judge them at https://itch.io/jam/punyjam-2/entries . One of the games (Opportunity) comes with source code too, so you can see how it works, if you're interested.